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Panel Descriptions
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1. INPUT Jack
Connect your bass here.
2. COMPRESSION Knob
This is an effect that compresses overly high signals while
boosting lower-level input.
Turning the knob to the right increases the compression effect.
When compression is on, the ON indicator lights up; the
indicator is unlit when the effect is turned off.
COSM AMPLIFIER
3. SHAPE Switch
This effect alters the COSM amps’ tonal qualities. The particular
effect obtained varies according to the amp selected with the
Type switch (
➃
).
4. Type Switch
You can select from the following seven amp types:
OCTAVE BASS
This original amp type creates sounds one octave below the
input sounds and layers them together to create a fatter bass
sound.
Offers more edge in the octave sound.
* This function may not work properly when inputting chords; for
example, sounds may not play, or they may be played at incorrect
pitches. Always input a single note.
FLIP TOP
Models the Ampeg B-15 (1 x 15”). This amp provided the
underpinning for many of the most famous Motown hits. It
features a fat sound, while the amp's compact cabinet produces
a distinct contour.
Offers more nuances of your picking expression.
B MAN
Models the Fender Bassman 100 (4 x 10”).
This amp has been a favorite since the inception of electric
basses. It features the sonic characteristics of tube amps,
whereby increasing the distortion slightly yields a fatter sound.
Offers a tone with boosted midrange “fatness.”
T.E
Models the Trace Elliot AH600SMX + 1048 (4 x 10”) + 1518 (1 x
15”). This amp was used widely by rock bands in the 1980s. Its
wide range, clear attack, and other features make it a great amp
for all kinds of performance situations.
Offers more attack.
BASS360
Models the acoustic 360 (1 x 18”).
This amp was used in the ’70s not only by jazz bassists, but by
funk and hard rock players as well. The tone features a warm
low end with a midrange that maintains a clear contour, even
with finger picking.
Offers more nuances of your picking expression.
SESSION
Models the SWR SM-400 + Goliath (4 x 10”) + Big Ben (1 x 18”).
This tweeter-equipped amp is representative of the “L.A.
Sound” of the eighties. It features a wide-range tone that
balances presence in the low end with a clear, open sound.
Offers a tight tone with a cut midrange.
CONCERT 810
Models the Ampeg SVT + 810E (8 x 10”).
This amp typifies the rock sound that relied heavily on
combinations of high-output tube amp sections and large-sized
cabinets.
The characteristic sound is one of overwhelming low-frequency
sound pressure.
Offers extra heavy bottom sound.
* All product names mentioned in this document are trademarks or
registered trademarks of their respective owners, and are not related to
Roland Corporation.
In this manual, these names are used as appropriate ways to indicate
sounds that are simulated using COSM technology.
5. GAIN Knob
This adjusts the preamp section’s input level.
Turning the knob to the right increases the gain.
Using a high gain setting allows you to get an overdrive sound.
Set the knob to as high a value as possible before the sound
distorts to get the best signal-to-noise ratio.
6. VOLUME Knob
Adjusts the overall volume.
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